JP7291733B2 - Systems for controlling switches, switching arms and electrical installations - Google Patents

Description

The present invention relates to a system for controlling switches, switching arms and electrical installations.

It is known in the art to use systems for controlling the switches of voltage converters intended to be connected to rotating electrical machines. This type of system is
- a driver designed to supply an output command signal to a switch, the driver also designed to supply an output command signal from a received command, the driver designed to receive a so-called global suppression command; and the driver is configured such that the output command signal causes the switch to remain open regardless of the command received as long as a global inhibit command is received at the first input. A driver designed to
- a first sensor designed to provide a measurement of a first voltage;
- a first monitoring device for monitoring a first voltage measurement, providing a global inhibit command to a first input of the driver if the first voltage measurement falls below a predetermined threshold; a first monitoring device designed to
Prepare.

In this known control system, the monitored first voltage is generally used to power the driver. The fact that this first voltage is too low is therefore a serious failure for the control system. Thus, the first monitoring device supplies a global suppression command intended to keep the switch open all the time.

It is an object of the invention to allow monitoring of at least one other voltage.

For this purpose, the driver also comprises a second input intended to receive a so-called partial suppression command, and the driver will receive the received command as long as a partial suppression command is received at the second input. is independently designed to establish an output command signal so that the rotating electrical machine can operate in alternator mode.
A control system of the type described above is proposed,
- a second sensor designed to provide a measurement of a second voltage different from the first voltage;
- a second monitoring device for monitoring the second voltage measurement, providing a partial suppression command to the second input of the driver if the second voltage measurement falls below a predetermined threshold; a second monitoring device designed to
Also prepare.

A second voltage can also be monitored by the present invention. However, since the undervoltage of this second voltage is generally less severe than the undervoltage of the first voltage, the present invention allows the alternator mode to be maintained.

Optionally, the control system further comprises a microcontroller implementing a command establishment device designed to supply commands, the microcontroller implementing the first monitoring device.

Also optionally, the driver is a command management device designed to establish an input command signal from commands received from the microcontroller and designed to amplify the input command signal and provide an output command signal to the switch. an amplifier, the amplifier having two positive and negative supply terminals intended to receive the supply voltage, the driver also comprising a suppression device for suppressing the amplifier, the suppression device comprising , is designed to reduce the supply voltage upon receipt of a global suppression command so that the output command signal will keep the switch open regardless of the input command signal.

Also optionally, the suppression device is designed to short-circuit the power supply terminals of the amplifier upon receipt of a global suppression command.

Also optionally, the suppression device comprises a controllable shorting switch having a current input terminal connected to the positive power supply terminal, a current output terminal connected to the negative power supply terminal, and a command terminal for global suppression. A command is in the form of a voltage between a command terminal and a current output terminal.

also selectively
- a control system also comprising a microcontroller designed to receive mode requests,
a command establishment device designed to supply commands and forward mode requests to the microcontroller's output pins;
- an inadvertent activation detection device;
and
The driver is connected to the output pin to receive the transmitted mode request, the output pin is connected to the microcontroller's input pin to receive the transmitted mode request, and the inadvertent activation detection device is connected to the input Detect when the mode request sent at the pin indicates motor mode, while detecting when the mode request received by the microcontroller indicates alternator mode, in which case a partial or full inhibit command is issued to the driver. designed to be sent to

Also proposed is a switching arm system of a voltage converter,
- a high side switch;
- a low side switch;
- a system for controlling one of the high-side switch and the low-side switch according to the invention;
and
A high-side switch and a low-side switch are connected together at an intermediate point intended to be connected to a phase of the rotating electrical machine.

Optionally, the switching arm system further comprises a system for controlling the other of the high side switch and the low side switch according to the invention.

Also proposed is an electrical installation,
- a control system according to the invention;
- a first DC voltage source designed to supply a first voltage;
- a second DC voltage source;
- a battery fuse terminal connected to a second DC voltage source and designed to supply the second voltage to electrical components;
electrical installation.

Optionally, the electrical equipment
- a starter connected to a first DC voltage source;
- a controllable switch designed to connect the first and the second DC voltage source to each other;
Prepare.

FIG. 1 is a simplified electrical circuit diagram of an electrical system 100 according to the invention comprising a DC voltage source, a rotating electrical machine and a voltage converter interposed therebetween. 2 is a functional diagram of a system for controlling the voltage converter of FIG. 1; FIG. FIG. 3 is an electrical circuit diagram showing the elements of a control system that make it possible to open the switch of the voltage converter independently of the signal controlling this switch.

An electrical system 100 according to the invention will now be described with reference to FIG. Electrical system 100 is intended to be implemented, for example, in a motor vehicle.

The electrical system 100 first of all comprises a DC voltage source 102 with a positive terminal and a negative terminal, the negative terminal generally being an electrical connection indicated in the figure as GND1 (for "Ground"), such as the chassis of an automobile. Connected to ground. A DC voltage source 102 is designed to supply a DC input voltage E across these terminals, for example having a value of approximately 12V.

The electrical system 100 also comprises a rotating electrical machine 104 comprising stator phases U, V, W, a first end of each of the stator phases U, V, W being connected to the same neutral point N in the illustrated example. be done. In the illustrated example, rotating electrical machine 104 forms part of an alternator-starter that is coupled to a heat engine (not shown) of an automobile. The rotating electrical machine 104 therefore alternately operates in motor mode to assist the heat engine and in alternator mode to convert a portion of the mechanical energy produced by the heat engine into electrical energy to recharge the DC voltage source 102 . designed to

The electrical system 100 also comprises a voltage converter 106 connected on one side to the terminals of the DC voltage source 102 and on the other side to the rotating electrical machine 104 .

The voltage converter 106 comprises switching arms associated with the stator phases U, V, W respectively. Each switching arm comprises a high side switch connected to the positive terminal of the DC voltage source 102 and a low side switch connected to the negative terminal of the DC voltage source 102 . The high-side and low-side switches are also connected together at intermediate points connected to the associated stator phases U,V,W. Each switching arm is intended to be controlled by switching between two configurations. In the first configuration, called the high configuration, the high side switches are closed and the low side switches are open so that the input voltage E is applied to the second ends of the associated stator phases U, V, W. In a second configuration, called the low configuration, the high side switches are open and the low side switches are closed, so that zero voltage is applied to the second ends of the associated stator phases U, V, W.

The electrical energy is supplied to the rotating electrical machine 104 when the rotating electrical machine 104 is required to operate in the motor mode, and the electrical energy is supplied to the DC voltage when the rotating electrical machine 104 is required to operate in the alternator mode. As supplying the source 102, the voltage converter 106 is intended to be controlled by switching each arm between these two configurations.

The electrical system 100 therefore also comprises a control system 108 for controlling the voltage converter 106, which will be described in detail below.

Referring to FIG. 2, the electrical system 100 also includes an electronic control unit 202 (or ECU) and a data bus 204, in the illustrative example a CAN (“controller area network”) data bus connects the electronic control unit 202 and the control system 108.

The electrical system 100 also comprises a DC voltage source 206 designed to supply a DC voltage V _BAT1 to an electrical ground, designated GND2 in the figure and typically connected to the chassis of the vehicle. In the illustrative example, DC voltage source 206 comprises a lithium-ion battery and the value of voltage V _BAT1 is, for example, approximately 12V. Voltage source 102, which supplies voltage E, uses, for example, voltage source 206, so that voltage E is derived from voltage V _BAT1 .

The electrical system 100 also includes a starter 208 designed to assist in starting the heat engine of an automobile when the alternator starter is unable to assist in starting the heat engine, e.g., when the temperature of the heat engine is too low. Prepare.

Electrical system 100 also comprises a DC voltage source 210 designed to supply a DC voltage V _BAT2 to electrical ground GND2. In the illustrated example, the DC voltage source 210 comprises a lead-acid battery and the value of the voltage V _BAT2 is, for example, approximately 12V.

The electrical system 100 also comprises a controllable switch 212 which, when closed, is intended to connect the two DC voltage sources 206, 210 together so that the two DC voltage sources Together, they provide sufficient current when the starter 208 operates.

The electrical system 100 also has a battery fuse terminal ₂₁₄ (or _BFT )

The electrical system 100 also includes an electrical component 216 connected to the battery fuse terminal 214 for receiving the voltage V _BFT and consequently electrically powered.

The battery fuse terminal 214 includes at least one fuse (not shown) that provides direct current when the current through the fuse becomes too great, for example, when one of the electrical components 216 shorts. It is intended to disconnect the voltage source 210 .

Electrical system 100 also includes a voltage sensor 218 designed to provide a measurement V _{BFT_CAN} of voltage V _BFT to data bus 204 .

Control system 108 for controlling the switching arm of voltage converter 106 of FIG. 1 will now be described in more detail. This switching arm, referenced 220, comprises a high-side switch, referenced 222, and a low-side switch, referenced 224, as described above with reference to FIG. High-side switch 222 has a current input terminal connected to the positive terminal of DC voltage source 102, a current output terminal connected to the midpoint of switching arm 220, and a command terminal. Low-side switch 224 has a current input terminal connected to the midpoint, a current output terminal connected to electrical ground GND1, and a command terminal.

Control system 108 first has an input 226 connected to battery fuse terminal 214 for receiving voltage V _BFT .

Control system 108 also includes two sensors 228, 230 connected to input 226 and designed to provide two measurements _{VBFT_1} , _{VBFT_2} , respectively, of voltage _VBFT .

Control system 108 also has an input 232 connected to DC voltage source 206 for receiving voltage V _BAT1 .

Control system 108 also includes two sensors 234, 236 connected to input 232 and designed to provide two measurements V _{BAT1_1} , V _{BAT1_2} of voltage V BAT1 , _respectively .

The control system 108 also includes a microcontroller 242 and a driver 260, described below. For example, there is a driver (similar to driver 260) for each switching arm of voltage converter 106 and a single microcontroller 242 for all drivers.

As known per se, microcontroller 242 is a computing device provided with a processing unit and main memory (not shown). One or more computer programs are intended to be stored in the main memory and executed by the processing unit to implement the devices described below.

Therefore, the microcontroller 242 first of all implements the command establishment device 244

The command establishment device 244 is designed to first receive from the data bus 204 a mode request, indicated by MR in the figure, indicating the mode in which the voltage converter 106 is to be controlled (alternator mode or motor mode). be done. Accordingly, command establishment device 244 is designed to selectively operate in motor mode and alternator mode according to mode request MR received from data bus 204 .

The command establishment device 244 is directed to the driver 260 and is designed to establish commands denoted by cmd in the figure, these commands cmd being adapted to its current mode. More specifically, in motor mode, the command establishment device 244 is designed to establish the command cmd from the target torque C demanded at the shaft end of the rotating electrical machine 104 . In alternator mode, command establishment device 244 is designed to establish command cmd as a function of target voltage E* with respect to voltage E. Target torque C and target voltage E* are received, for example, from data bus 204 .

Command establishment device 244 is also designed to send mode request MR to driver 260 . In order to distinguish the received mode request MR from the transmitted mode request MR, the transmitted mode request MR is called mode selection, denoted MS in the figure.

The command establishment device 244 also receives a command cmd, intended to effect the opening of the switches 222, 224 independently of the received setpoints (C, E*), as long as it receives a so-called software inhibit command, denoted INHIB_L. to the driver 260.

The microcontroller 242 also has a monitoring device 246 for monitoring the measured value V _{BFT_CAN} designed to supply a software inhibit command INHIB_L to the command establishing device 244 if the measured value V _{BFT_CAN} falls below a predetermined threshold. come true. In the illustrated example, this predetermined threshold is between 8V and 11V, for example 10.8V.

The microcontroller 242 also includes a monitoring device 248 for monitoring the measured value V _{BFT_1} , designed to supply a software inhibit command INHIB_L to the command establishing device 244 if the measured value V _{BFT_1} falls below a predetermined threshold. come true. In the illustrated example, this predetermined threshold is between 8V and 11V, for example 10.8V.

The microcontroller 242 is also a monitoring device for monitoring the measured value V _{BFT_2} , designed to supply a so-called partial inhibition command denoted INHIB_P to the driver 260 if the measured value V _{BFT_2} falls below a predetermined threshold. 252. In the illustrated example, this predetermined threshold is between 8V and 11V, for example 10.8V.

The microcontroller 242 is also a monitoring device for monitoring the measured value V _{BAT1_1} , designed to supply a so-called global inhibition command denoted INHIB_T to the driver 260 if the measured value V _{BAT1_1} falls below a predetermined threshold. H.254 is realized. In the illustrated example, this predetermined threshold is between 5V and 8V, for example 5.5V.

The microcontroller 242 also includes a monitoring device 256 for monitoring the measured value V _{BAT1_2} , designed to provide a software inhibit command INHIB_L to the command establishment device 244 if the measured value V _{BAT1_2} falls below a predetermined threshold. come true. In the illustrated example, this predetermined threshold is between 5V and 8V, for example 5.5V.

It will be appreciated that the predetermined threshold for measurements of voltage V _BFT is higher than the predetermined threshold for measurements of voltage V _BAT1 . In fact, lithium-ion batteries are at risk of igniting and/or releasing toxic gases in the event of even a slight undervoltage. On the other hand, such risks are greatly mitigated in lead-acid batteries, whereby larger undervoltages can be tolerated.

Microcontroller 242 also implements inadvertent activation detection device 258 . Inadvertent activation can occur if the microcontroller 242 fails. In this case, the failed microcontroller 242 will switch to motor mode and issue a mode select MS indicating switching to motor mode while the received mode request MR indicates to use alternator mode (vehicle is stopped). There is a risk of sending to driver 260 . Thus, inadvertent start detection device 258 is designed to detect when mode select MS indicates motor mode, while mode request MR indicates alternator mode. In this case, inadvertent activation detection device 258 is designed to send a partial suppression command INHIB_P to driver 260 .

To ensure that the inadvertent activation detection device 258 actually receives the mode selection MS sent by the microcontroller 242 , the inadvertent activation detection device 258 uses an output pin of the microcontroller 242 connected to the driver 260 . is designed to monitor an input pin of a microcontroller 242 connected to , presenting a mode select MS.

Further, in the illustrative example, microcontroller 242 has two levels of execution that are at least partially structurally distinct, referred to as a functional level and a supervisory level. Devices 244, 246, 248, 254 are implemented at the functional level of microcontroller 242, indicated by shading in FIG. It is implemented at the supervisory level of controller 242 . Structural isolation can use two mechanisms (which can be achieved simultaneously). According to a first mechanism, the processing unit comprises two separate cores, each dedicated to two levels. Thus, microcontroller 242 is designed so that devices at each two levels are executed exclusively by the cores associated with that level and not by other cores. According to a second mechanism, two predetermined memory ranges of the main memory are each dedicated to two levels. Thus, the microcontroller 242 is designed so that each two level device has exclusive use of the memory range associated with that level and no other memory range.

Control system 108 also includes a monitoring device 240 (or “watchdog”) for monitoring microcontroller 242 . This monitoring device 240 is designed to supply a global inhibit command INHIB_T to the driver 260 if a failure of the microcontroller 242 is detected.

Next, driver 260 will be described in more detail. In the illustrated example, driver 260 is at least partially implemented by an application specific integrated circuit (or ASIC).

Driver 260 comprises a command management device 262 and two amplifiers, high side 264 and low side 266 respectively.

Command management device 262 is designed to receive command cmd from microcontroller 242 and to provide input command signals cmd*, /cmd* from command cmd to two amplifiers 264, 266, respectively. Input command signals cmd*, /cmd* are substantially complementary to each other. Input command signals cmd*, /cmd* are outputs provided to switches 222, 224 so that rotating electrical machine 104 can operate in motor mode or alternator mode according to the mode in which microcontroller 242 is operating. They are amplified by amplifiers 264 and 266 respectively to obtain command signals CMD* and /CMD* respectively.

The command management device 262 is also designed to receive the partial inhibition command INHIB_P and is also designed to operate in a so-called degraded alternator mode as long as the partial inhibition command INHIB_P is received, the command management device 262 itself ie, to establish the input command signals cmd*, /cmd* supplied to the amplifiers 264, 266 independently of the command cmd and the mode selection MS received from the microcontroller 242. Input command signals cmd*, /cmd* are used to obtain output command signals CMD*, /CMD*, respectively, which are provided to switches 222, 224 so that rotating electrical machine 104 can operate in alternator mode. It is amplified again by amplifiers 264,266.

Driver 260 also includes a partial inhibit input 270 coupled to devices 252,258 to receive a partial inhibit command INHIB_P supplied by either one of devices 252,258. This partial inhibition input 270 is also connected to the command management device 262 of the driver 260 to supply each received partial inhibition command INHIB_P to the command management device 262 for switching to degraded alternator mode.

The driver 260 also comprises a global inhibit input 268 connected to the monitoring devices 254,240 to receive a global inhibit command INHIB_T supplied by either of the monitoring devices 254,240. As long as the global inhibit command INHIB_T is received at the global inhibit input 268, the driver 260 outputs command signals CMD*, / that keep the switches 222, 224 open regardless of the command cmd received from the microcontroller 242. Designed to supply CMD*. The manner in which this function is performed is described below with reference to FIG.

Control system 108 also includes a system basis chip (or SBC) 238 connected to data bus 204 and also connected to DC voltage source 206 (eg, by input 232) to receive voltage V _BAT1 . System basis chip 238 uses voltage V _BAT1 to supply one or more power supply voltages, among other things, for microcontroller 242 and driver 260 , transmit messages between data bus 204 and microcontroller 242 , and transmit messages between microcontroller 242 and microcontroller 242 . designed to perform several functions, including monitoring of To perform this last function, system basis chip 238 includes monitoring device 240 .

It will be appreciated that voltage V _BAT1 is used to power driver 260 and microcontroller 242 . Therefore, an undervoltage of voltage V _BAT1 is a catastrophic failure for control system 108 . As such, the monitoring device 254 provides a global inhibit command INHIB_T intended to keep the switches 222, 224 open at all times. On the other hand, an undervoltage of voltage V _BFT (in any case of control system 108) is less severe, thereby allowing the depleted alternator mode to be maintained. That is why the suppression command of device 252 is provided to partial suppression input 270 of driver 260 .

Next, with reference to FIG. 3, the elements that perform the global suppression function will be described.

As shown in FIG. 3, high side amplifier 264 or low side amplifier 266 receives input command signal cmd* or /cmd*, respectively, amplifies the input command signal cmd* or /cmd*, and outputs command signal cmd* or /cmd*, respectively. It is designed to obtain the signal CMD* or /CMD* and apply the output command signal CMD* or /CMD* to the high side switch 222 or the low side switch 224 respectively to selectively open or close.

Each amplifier 264, 266 has two positive (denoted + in FIG. 3) and negative (denoted - in FIG. 3) power supplies intended to receive the power supply voltage for this amplifier 264, 266. have terminals. The negative power supply terminal is connected to the current output terminal of high side amplifier 222 or low side amplifier 224, respectively.

Driver 260 also includes two bootstrap capacitors 302, 304 connected between the positive and negative terminals of amplifiers 264, 266, respectively, to supply the respective power supply voltages.

The driver 260 also includes two charging devices 306, 308 that charge the two bootstrap capacitors 302, 304 respectively from a voltage and the voltage V _BAT1 in the illustrated example. Charging device 306 comprises, for example, a charge pump. The charging device 306 comprises, for example, a voltage V _BAT1 and a capacitor 309 connected to the capacitor 302 via four switches 311 ₁ , 311 ₂ , 311 ₃ , 311 ₄ . Charging device 306 is controlled to alternately connect capacitor 309 to voltage V _BAT1 and bootstrap capacitor 302 . Charging device 308 comprises, for example, a diode 313 that allows passage of current from voltage V _BAT1 to bootstrap capacitor 304 .

Driver 260 also includes a suppression device 310 for high side amplifier 264 . Suppression device 310 is connected to global inhibit input 268 for receiving global inhibit command INHIB_T such that upon receipt of global inhibit command INHIB_T, output command signal CMD* is high regardless of received input command signal cmd*. It is designed to drop the supply voltage across the supply terminals of the high side amplifier 264, causing the side switch 222 to open.

In the illustrative example, the suppression device 310 is designed to short the power supply terminals of the high side amplifier 264 upon receipt of the global suppression command INHIB_T, thereby discharging the bootstrap capacitor 302 and increasing the power supply voltage of the high side amplifier 264. lower the For example, suppression device 310 is designed to cancel this supply voltage. A drop in the power supply voltage results in a drop in the output command signal CMD*, so that this output command signal CMD*, at its maximum, is no longer sufficient to cause the high-side switch 222 to close. Therefore, high side switch 222 remains open.

More specifically, in the illustrative example, suppression device 310 is a controllable short circuit having a current input terminal connected to the positive power supply terminal, a current output terminal connected to the negative power supply terminal, and a command terminal. Equipped with a switch. Additionally, driver 260 includes a level shifting device 312 (or “level shifter”) connected between global suppression input 268 and suppression device 310 . Controllable shorting switches are, for example, insulated gate field effect transistors (or “metal oxide semiconductor field effect transistors” or MOSFETs).

Each global inhibit command INHIB_T applied to global inhibit input 268 is in the form of a voltage with respect to electrical ground GND2. Level shifter 312 receives this voltage and shifts global inhibit command INHIB_T to provide global inhibit command INHIB_T in the form of a voltage between the command terminal of the controllable shorting switch and the negative terminal of high side amplifier 264 . designed to

Similarly, for suppression of low-side amplifier 266 , driver 260 comprises suppression device 314 and level shifter 316 .

In accordance with the above, it is determined that the overall suppression function of switches 222,224 is independent of the input command signals cmd*, /cmd* received by amplifiers 264,266. Therefore, it is possible to open the two switches 222, 224 even if the command management device 262 fails. Moreover, since the described solution uses a reduced number of parts and is simpler, suppression is rapid. In the illustrative example, the time between application of global inhibit command INHIB_T to global inhibit input 268 and actual inhibition of amplifiers 264, 266 is less than 500 μs, eg, 400 μs. Here, the typically required delay between the occurrence of a fault and the opening of switches 222, 224 is approximately 1 ms. Therefore, a delay of 400 μs to implement the suppress command leaves 600 μs for fault detection, which is generally sufficient.

The invention is not limited to the embodiments described above. Indeed, it will be apparent to those skilled in the art that modifications are possible.

For example, at least one of monitoring devices 252, 254 may be created external to microcontroller 242 in one or more pre-wired components (ie, not implementing a computer program).

Further, in general, each monitoring device 246, 248, 256 is connected to a global inhibit input 268 to cause opening of switches 222, 224 in motor mode and alternator mode, or to switch the driver to degraded alternator mode. may be connected to the partial suppression input 270 at .

Moreover, the terminology used should not be understood to be limited to the elements of the above-described embodiments, but on the contrary encompass all equivalent elements that a person skilled in the art can infer from his general knowledge. It should be understood then.

Claims (9)

A control system for controlling switches (222; 224) of a voltage converter (106) intended to be connected to a rotating electrical machine (104), comprising:
- a driver (260) designed to supply output command signals (CMD*; /CMD*) to said switches (222; 224), said driver (260) receiving a command (cmd) The driver (260) is also designed to provide said output command signals (CMD*;/CMD*) from a first input (268 ), and said driver (260) is configured such that said output command signals (CMD*;/CMD*) are received as long as said global inhibition command (INHIB_T) is received at said first input (268). a driver (260) designed to keep said switches (222; 224) open independently of said command (cmd);
a first sensor (234) designed to provide a measurement ( _{VBAT1_1} ) of the first voltage ( _VBAT1 );
A first monitoring device (254) for monitoring said measured value (V _{BAT1_1} ) of said first voltage (V _BAT1 ), said measured value (V _{BAT1_1} ) of said first voltage (V _BAT1 ) ) is below a predetermined threshold, a first monitoring device (254) designed to supply said global inhibit command (INHIB_T) to said first input (268) of said driver (260);
and
Said driver (260) also comprises a second input (270) intended to receive a so-called partial inhibition command (INHIB_P), said driver (260) being adapted to receive said partial inhibition command (INHIB_P) from said second so long as it is received at the input (270) of the output command signal (CMD*; /CMD*),
The control system is
a second sensor (230) designed to provide a measurement ( _{VBFT_2} ) of a second voltage ( _VBFT ) distinct from said first voltage ( _VBAT1 );
a second monitoring device (252) for monitoring said measured value ( _{VBFT_2} ) of said second voltage ( _VBFT ), said measured value ( _{VBFT_2} ) of said second voltage ( _VBFT ); ) is below a predetermined threshold, a second monitoring device (252) designed to supply said partial inhibition command (INHIB_P) to said second input (270) of said driver (260);
and
It also has a microcontroller (242) designed to receive Mode Requests (MR),
The microcontroller (242) includes:
a command establishment device (244) designed to supply said command (cmd) and to transfer said mode request (MR) to an output pin of said microcontroller (242);
an inadvertent activation detection device (258);
and
The driver (260) is connected to the output pin for receiving the forwarded mode request (MS), and the output pin is connected to the microcontroller for receiving the forwarded mode request (MS). (242), said inadvertent activation detection device (258) detects when said forwarded mode request (MS) received at said input pin indicates motor mode; detecting when the mode request (MR) received by the microcontroller (242) indicates an alternator mode, in which case the partial inhibit command (INHIB_P) or the total inhibit command (INHIB_T) is transmitted to the driver (260); A control system designed to transmit to further comprising a microcontroller (242) implementing a command establishment device (244) designed to supply said command (cmd), said microcontroller (242) also implementing said first monitoring device (254) The control system of claim 1, wherein: said driver (260) is a command management device (262) designed to establish input command signals (cmd*;/cmd*) from said command (cmd) received from said microcontroller (242); amplifiers (264; 266) designed to amplify said input command signals (cmd*;/cmd*) to provide said output command signals (CMD*;/CMD*) to said switches (222; 224); and said amplifier (264; 266) has two positive and negative supply terminals intended to receive a supply voltage,
Said driver (260) also comprises a suppression device (310; 314) for suppressing said amplifier (264; 266), said suppression device (310; 314) receiving said input command signal (cmd*;/ cmd*), on receipt of the global inhibit command (INHIB_T), the power supply voltage is 3. The control system of claim 2, wherein the control system is designed to reduce 4. The control system of claim 3, wherein the suppression device (310; 314) is designed to short-circuit the power terminals of the amplifier (264; 266) upon receipt of the global suppression command (INHIB_T). Said suppression device (310; 314) comprises a controllable shorting switch having a current input terminal connected to said positive power supply terminal, a current output terminal connected to said negative power supply terminal and a command terminal. 5. A control system according to claim 3 or 4, wherein said global inhibition command (INHIB_T) is in the form of a voltage between said command terminal and said current output terminal. A switching arm system (220) of a voltage converter (106), comprising:
a high side switch (222);
a low side switch (224);
A control system according to any preceding claim for controlling one of the high side switch (222) and the low side switch ( 224 );
and
A switching arm system (220) wherein said high side switch (222) and said low side switch (224) are connected to each other at a midpoint intended to be connected to a phase of the rotating electrical machine (104). 7. Switching according to claim 6 , further comprising a control system according to any one of claims 1 to 5 for controlling the other of said high side switch (222) and said low side switch (224). Arm system (220). a control system according to any one of claims 1 to 5 ;
a first DC voltage source (206) designed to supply said first voltage (V _BAT1 );
a second DC voltage source (210);
a battery fuse terminal (214) connected to said second DC voltage source (210) and designed to supply said second voltage (V _BFT ) to an electrical component (216);
An electrical installation (100) comprising: An electrical installation (100) comprising a control system, comprising:
The control system is
A control system for controlling switches (222; 224) of a voltage converter (106) intended to be connected to a rotating electrical machine (104), comprising:
- a driver (260) designed to supply output command signals (CMD*; /CMD*) to said switches (222; 224), said driver (260) receiving a command (cmd) The driver (260) is also designed to provide said output command signals (CMD*;/CMD*) from a first input (268 ), and said driver (260) is configured such that said output command signals (CMD*;/CMD*) are received as long as said global inhibition command (INHIB_T) is received at said first input (268). a driver (260) designed to keep said switches (222; 224) open independently of said command (cmd);
a first sensor (234) designed to provide a measurement (VBAT1_1 ₎ of the first voltage ( _VBAT1 );
A first monitoring device (254) for monitoring said measured value ( V _{BAT1_1} ) of said first voltage (V _BAT1 ), said measured value (V BAT1_1 ) of said first voltage (V _{BAT1 )} ) is below a predetermined threshold, a first monitoring device (254) designed to supply said global inhibit command (INHIB_T) to said first input (268) of said driver (260);
and
Said driver (260) also comprises a second input (270) intended to receive a so-called partial inhibition command (INHIB_P), said driver (260) being adapted to receive said partial inhibition command (INHIB_P) from said second so long as it is received at the input (270) of the output command signal (CMD*; /CMD*),
The control system is
a second sensor (230) designed to provide a measurement ( _{VBFT_2} ) of a second voltage ( _VBFT ) distinct from said first voltage ( _VBAT1 );
a second monitoring device (252) for monitoring said measured value ( _{VBFT_2} ) of said second voltage ( _VBFT ), said measured value (VBFT_2) of _said second voltage ( _VBFT ); ) is below a predetermined threshold, a second monitoring device (252) designed to supply said partial inhibition command (INHIB_P) to said second input (270) of said driver (260);
and
The electrical equipment (100) comprises:
a first DC voltage source (206) designed to supply said first voltage (V _BAT1 );
a second DC voltage source (210);
a battery fuse terminal (214 ) connected to said second DC voltage source (210) and designed to supply said second voltage (V _BFT ) to an electrical component (216);
a starter (208) connected to the first DC voltage source (206);
a controllable switch (212) designed to connect said first and second DC voltage sources (206, 210) to each other;
An electrical installation (100) further comprising :

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